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Ice properties determined from long-period wave measurements

The utility of long period wave measurements in the ice covered Arctic Ocean was examined, with the aim of using the measurements to diagnose the path-integrated ice thickness between the source of the waves (the open ocean beyond Fram Strait) and the measurement point, in this case to the north of Greenland.

Autonomous wave measuring buoys were developed and successfully deployed for over two years. Considerable practical and theoretical problems were encountered with the resonant wave theory, however, leading to the evaluation of alternative formulations to extract ice thickness. Viscoelastic parameterisations seemed most promising, and the evaluation of this method is currently underway as part of a follow-up project. The buoys also allowed the drift and dynamics of the ice to be determined. Drift was dominantly southwards, with the ice exiting the region through Nares Strait, between Greenland and Ellesmere Island.

Reported by

DAMTP, University of Cambridge
Wilberforce Road
CB3 0WA Cambridge
United Kingdom
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